Objective 7- Grade 10 Applied
One version of the definition of domain is: "The domain of a function describes all possible x-values of a funtion. This will either be finite (limited values) or infinite (unlimited values)."
One version of the definition of range is: "Range is dependant on the domain, as it is any y-value."
ex. Give the domain and range of the following:
{ (-1,2), (3,2), (-1,3) }
d= {-1,3}
r= {2,3}
To find the domain and range from a graph you have to decided what all possible values x and y could be. Example: Find the domain and range of this line.
To find the domain of this line, you look at the graph and decide possible values x could be.
Therefore D= [2,5] *This means that your x-value can be anything in between and including 2 and 5.
To find the range of this line, you look at the graph and decide all possible values y could be.
Therefore R= [1,4] *This means that your y-value can be anything in between and including 1 and 4.
Example 2: Find the domain and range of the function graphed below.
The domain of this line would be:
D= [-2, 3]
The range of this line would be:
R= [3, -2]
One version of the definition of domain is: "The domain of a function describes all possible x-values of a funtion. This will either be finite (limited values) or infinite (unlimited values)."
One version of the definition of range is: "Range is dependant on the domain, as it is any y-value."
ex. Give the domain and range of the following:
{ (-1,2), (3,2), (-1,3) }
d= {-1,3}
r= {2,3}
To find the domain and range from a graph you have to decided what all possible values x and y could be.
Example: Find the domain and range of this line.
To find the domain of this line, you look at the graph and decide possible values x could be.
Therefore D= [2,5] *This means that your x-value can be anything in between and including 2 and 5.
To find the range of this line, you look at the graph and decide all possible values y could be.
Therefore R= [1,4] *This means that your y-value can be anything in between and including 1 and 4.
Example 2: Find the domain and range of the function graphed below.
The domain of this line would be:
D= [-2, 3]
The range of this line would be:
R= [3, -2]